Question

单片机试题求助1．已知（R0）=20H,(20H ) =10H,(P0) =30H,(R2) =20H,执行如下程序段后

Answer 1

1.(40H)=44H；

2.（R0）= 36H (R2)= E2H

3.(A)= 10H (B)=01H

4.(41H)= 03H (42H)= 02H

5.貌似缺少(41H)的已知条件,且需确认（40H）=56后面有没有H；(40H) = 56 (41H) = (42H )=56 (43H)=56循环右移

5.(30H) =78 (31H) =04H (32H )=00H (33H)=FFH

7.

1)寄存器寻址2）直接寻址3）位寻址4）立即寻址5）变址间接寻址6）寄存器间接寻址